Saw-guide



(No Model.)

G. W. RODEBAUGH.

SAW GUIDE. No. 319,624. Patented June 9, 1885.

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Unrrnn S'ra'rns GEORGE WV. RODEBAUGH,

PATENT @rrrcn.

OF J AOKSON, MICHIGAN.

saw-coma SPECIFICATION forming part of Letters Patent No, 319,624, dated June 9, 1885.

I Application filed January 2, 1885. (N0 model.)

1'0 all whom it may concern.-

Be it known that I, Geo. W. RODEBAUGH, of Jackson, in the county of Jackson, and State of Michigan, having invented new and useful Improvements in Self -Oiling Saw- Guides; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form a part of this specification. v

This invention relates to certain new and useful improvements in the construction of adjustable self-oiling saw-guides having suitable appliances for adjusting the same to the saw, and means for selflubrication, the whole.

being especially designed as an improvement upon the saw-guide described in Letters Patent No. 230,499, issued to me, and dated July 27, 1880.

The invention consists in the peculiar construction of the various parts and their combinations, as more fully hereinafter described.

Figure 1 is a perspective view of my improved adjustable self oiling saw-guide. Fig. 2 is a horizontal section of the same, on the line of the axis of the main arm and adjusting screw. Fig. 3 is an end view showing the operation and position of the stops or rests. Fig. 4 is a detached perspective view of the Stops or rests.

In the accompanying drawings, which form a part of this specification, A represents a frame provided with slots, by means of which and suitable bolts said frame isadjustably secured to the sawframe. The box 13 is preferably made integral with the frame A, and is bored out to receive the cylindrical shank of the main armO of the guide. This arm has an internal chamber, a, of the form of the arm, which is L-shaped, as shown, and terminates in a bearing, 1), which has a central orifice through which the wick cis drawn. This chamber communicates with an internally-threaded orifice, (1, adapted to receive the screw D, the shank of which is supported in a box, E, secured and located across the overhanging end of the box B, which, at this point, consists of a rectangular box, E. Upon the end of this screw is secured the toothed wheel F, adapted to engage with the worm-thread it upon the rod '13, which is suitably journaled across the box E, and is provided with a hand-wheel, 7a,

or other means for operating-it.

m is a set-screw through the end of the box E, and engaging with the hub of the toothed wheel, or the end of the screw D, and is adapted to take up all end mot-ion of the arm 0. G is another hollow arm, pivotally secured by a knucklejoint, n, to the arm 0, with its other end terminating in a bearing, 0, which also has a central orifice through which the wick r is drawn. The free ends of these arms G and G have orifices s t, through which the oil or lubricant is poured into the interiorof said arms, whence it is drawn by the capillary attraction of the wicks tothe saw which is designed to run between the heads 0 and I), re spectively, of the two arms 0 G. A set-screw, J, passes through the two arms, adapted to expand or contract the distance between the heads 0 and b by moving the arm G upon its pivotal point. K is a stop tapped into thrside of the frame A, and adapted to limit thi rotation of the main arm in its box, and arrest the same, and form a, rest when the arm is thrown into a vertical position, or nearly so, and to perform the same function when said arm is thrown down to a horizontal position, or nearly so, the arm 0 being provided with the bearings a and c for the purpose. When the main arm is thrown down, as in Fig. 3, the weight of the other arm, G, might cause a derangement of the knuckle-joint. Another stop or rest, L, is provided, and secured to the frame A by a suitable bolt or bolts, and so arranged that when the bearing 1) of the arm 0 strikes its rest, simultaneously therewith the under side of the arm G will strike the upper edge of its rest; and, to prevent too much strain upon the latter, it is provided with a downwardly-projecting flange, w, which rests against the edge of the frame A.

M is acap which forms the upper half of the box B, and it is secured thereto in the usual manner.

N is a cover secured over the toothed wheel and its adjacent parts for the exclusion of dust. The stops KL are removably secured and suit able holes, f g, are provided to change them from right toleft, in order to reverse the guide.

By this construction I secure a very strong saw-guide, adjustable to position, having means for taking up the wear of the parts, means for adjusting the two heads to different thicknesses of saws, stops to arrest its motion as desired, easily kept in repair,self-oiling,and very durable.

What I claim as myinvention is 1. In a saw-guide, a partially-rotating and L-shaped hollow arm, in combination with another hollow arm, the two arms being secured together by a knuckle or pivotal joint, and each arm having orifices for the admission of the lubricant and for the wicks, substantially as and for the purposes described.

2. In a saw-guide, the combination,with two hollow arms pivotally secured together by a knuckle or pivotal joint, substantially as described, of aset-screw adapted to turn one of the arms on its pivot and thus expand or contract the distances between the free ends of said arms, substantially as specified.

3. In a saw-guide, the combination of the box B, the partially-rotating arm 0, the shank of which works in said box, and is provided with an internally-threaded orifice, with the adjustingscrew D engaging with the orifice in the shank of said arm, the toothed-wheel F,

carried by said screw, and the worm h upon the rou journaled in the boX E, substantially as and for the purpose specified.

4. In asaw-guide, the combinationgvith two hollow arms pivotally secured together, of the set-screw described passing through the end of the frame constructed to take up the lost end motion, substantially as specified.

5. Ina saw-guide, the combination of two arms pivotal] y connected together by a knuckle or pivotaljoint,and a single stop, K,secured to the frame and constructed to arrest the throw or rotation of one-of said arms in either direction, substantially as set forth.

6. In a saw-guide, the combination, with two arms constructed and operating substantially as described, of the twostops K L, removably secured to the frame, substantially as and for the purposes specified.

7. The combination, in a saw-guide, of the hollow arm 0, adapted to rotate in its box, a hollow arm pivotally secured to said arm, a set-screw, J, passing through said arms, and the stops L K, removably secured to the frame, the parts being constructed and operating substantial] y as and for the purposes described.

8. In a saw guide, the combination, with the frame A, box B, arm 0, constructed to rotate in said box, the arm G, pivotally secured to said arm 0, the screw D, wheel F, carried by said screw, rod 1', worm-thread h upon said rod, and the set-screw m, constructed to take up lost end motion of said arm 0, all constructed, arranged, and operating substantially as and for the purpose specified.

GEORGE w. RODEBAUGH.

Witnesses: V

H. S. SPRAGUE, E. ScULLY. 

